Two 100 kg bumper cars are moving toward each other in opposite directions. Car A is moving at 8 m/s and Car Bat -10 m/s when they collide head-on. If the resulting velocity of Car B after the collision is 8 m/s, what is the velocity of Car A after the collision? (2 points)
а) -8 m/s
b)-10 m/s
c) 0 m/s
d)10 m/s

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Could someone . i have tried to solve myself but my calculation is off